Hydrochloric Acid → 7-[3-(4-carboxy-phenyl)-1-pentyl-prop-2-ynyl]-4,4-dimethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester

HRID 2415215Notes

Reaction equation

HRID 2415215 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:17]2[C:12](=[CH:13][CH:14]=[C:15]([CH:18]([CH2:31][CH2:32][CH2:33][CH2:34][CH3:35])[C:19]#[C:20][C:21]3[CH:26]=[CH:25][C:24]([C:27]([O:29]C)=[O:28])=[CH:23][CH:22]=3)[CH:16]=2)[C:11]([CH3:37])([CH3:36])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].O.[OH-].[Li+].Cl>C1COCC1.CO.O>[C:1]([O:5][C:6]([N:8]1[C:17]2[C:12](=[CH:13][CH:14]=[C:15]([CH:18]([CH2:31][CH2:32][CH2:33][CH2:34][CH3:35])[C:19]#[C:20][C:21]3[CH:26]=[CH:25][C:24]([C:27]([OH:29])=[O:28])=[CH:23][CH:22]=3)[CH:16]=2)[C:11]([CH3:36])([CH3:37])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 692158867-[3-(4-methoxycarbonyl-phenyl)-1-pentyl-prop-2-ynyl]-4,4-dimethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester

Product 1

HCID 692139537-[3-(4-carboxy-phenyl)-1-pentyl-prop-2-ynyl]-4,4-dimethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl esterYield 87.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 21899815MeOH tetrahydrofuranSolvent

Conditions

Temperature
40 °C

Procedure

A solution of 7-[3-(4-methoxycarbonyl-phenyl)-1-pentyl-prop-2-ynyl]-4,4-dimethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester (0.035 g, 0.07 mmole) in 5 mL of a 4:1 THF/methanol mixture was treated with a solution of 0.1 g of lithium hydroxide monohydrate in 2 mL of water and stirred at 40° C. for 2 hours. The mixture was diluted with 5 mL of water and the pH adjusted to 2 with 2N HCl solution. The mixture was extracted with three 10 mL portions of ethyl acetate. The combined organic extracts were dried over MgSO4, filtered and concentrated in vacuo to give 0.03 g of 7-[3-(4-carboxy-phenyl)-1-pentyl-prop-2-ynyl]-4,4-dimethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid tert-butyl ester as a yellow oil

Workup

  1. extractionThe mixture was extracted with three 10 mL portions of ethyl acetate
  2. dry with materialThe combined organic extracts were dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-97602948e6244fb1a67f646b8c05a903
Source dataset
uspto-grants-2004_11
Patent number
US06818652B2

Reaction notes

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